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241120s2024 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.4c03658
|2 doi
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|a DE-627
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|e rakwb
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|a eng
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|a Guan, Yuan
|e verfasserin
|4 aut
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|a Effective Improvement of Thermodynamics and Kinetics of BiVO4 Photoanode via CuI for Photoelectrochemical Water Oxidation
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|c 2024
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|a Text
|b txt
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|a ƒaComputermedien
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|a Date Revised 03.12.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The preparation of durable and efficient photoanodes for photoelectrochemical water oxidation is of great importance in promoting the development of green hydrogen production and artificial photosynthesis. Here, n-type BiVO4 was combined with p-type CuI to construct a CuI/BiVO4 (CIB-1) p-n heterojunction photoanode. The composite photoanode effectively overcame the drawbacks of BiVO4, such as low separation and injection efficiency of photogenerated electron-hole pairs. As a result, the CIB-1 had the highest photocurrent density of 1.98 mA cm-2, which was 2.5 times higher than pure BiVO4 with 0.79 mA cm-2 at 1.23 V (vs RHE) under AM 1.5G light irradiation. The CIB-1 had a lower Tafel slope of 23.2 mV decade-1 compared to 47.9 mV decade-1 for BiVO4, so the water oxidation kinetics was remarkably advanced over CuI/BiVO4. Based on DFT calculations, the OER overpotential of 0.480 V for CuI/BiVO4 was significantly lower than that of 1.546 V for BiVO4 due to the lower free energy from OH- to oxygen over CuI/BiVO4 compared to BiVO4
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|a Journal Article
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1 |
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|a Shen, Zheng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Gu, Xinyi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wu, Dayu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Shaomang
|e verfasserin
|4 aut
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|a Li, Zhongyu
|e verfasserin
|4 aut
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| 700 |
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|a Yan, Shicheng
|e verfasserin
|4 aut
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| 700 |
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|a Zou, Zhigang
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1999
|g 40(2024), 48 vom: 03. Dez., Seite 25679-25691
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:40
|g year:2024
|g number:48
|g day:03
|g month:12
|g pages:25679-25691
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|u http://dx.doi.org/10.1021/acs.langmuir.4c03658
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